Add kilometer-based Fahrtkosten billing, self-service distance entry, role deletion

- Facility: TravelCostMode (Pauschale/ProKilometer) + TravelCostPerKm, alongside
  the existing flat rate; fixes FacilityService.UpdateAsync silently dropping all
  Konditionen fields on update.
- New EmployeeFacilityDistance (Mitarbeiter x Einrichtung -> km) with full
  office-side CRUD in omsorgapp, plus a self-service endpoint/UI so field staff
  can maintain their own commute distance via OMSORG Connect (new
  ModuleType.EmployeeFacilityDistances, Own-scope, no Facilities access needed).
- Roles can now be deleted (blocked with a 409 while still assigned to a user).
- Fix employeesApi.js missing the Date-object conversion for dateOfBirth/entryDate/
  exitDate that crashed employee creation whenever a date was filled in; add a
  clear/remove control for those date fields.
- Requirements: flesh out FR-REC-3 with a staged Akquise cadence, add FR-REC-5/6
  for CRM feature scope and success metrics.
- Regenerate api-client-ts and api-client-php for all of the above.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

omsorgWeb/mitarbeiter-app/api-client-php/lib/Model/FacilityResponse.php

@@ -77,6 +77,8 @@ class FacilityResponse implements ModelInterface, ArrayAccess, \JsonSerializable
         'sunday_surcharge_percent' => 'float',
         'holiday_surcharge_percent' => 'float',
         'travel_cost_rate' => 'float',
+        'travel_cost_mode' => 'string',
+        'travel_cost_per_km' => 'float',
         'minimum_hours' => 'float',
         'break_policy' => 'string',
         'billing_interval' => 'string',
@@ -112,6 +114,8 @@ class FacilityResponse implements ModelInterface, ArrayAccess, \JsonSerializable
         'sunday_surcharge_percent' => 'double',
         'holiday_surcharge_percent' => 'double',
         'travel_cost_rate' => 'double',
+        'travel_cost_mode' => null,
+        'travel_cost_per_km' => 'double',
         'minimum_hours' => 'double',
         'break_policy' => null,
         'billing_interval' => null,
@@ -145,6 +149,8 @@ class FacilityResponse implements ModelInterface, ArrayAccess, \JsonSerializable
         'sunday_surcharge_percent' => true,
         'holiday_surcharge_percent' => true,
         'travel_cost_rate' => true,
+        'travel_cost_mode' => true,
+        'travel_cost_per_km' => true,
         'minimum_hours' => true,
         'break_policy' => true,
         'billing_interval' => true,
@@ -258,6 +264,8 @@ class FacilityResponse implements ModelInterface, ArrayAccess, \JsonSerializable
         'sunday_surcharge_percent' => 'sundaySurchargePercent',
         'holiday_surcharge_percent' => 'holidaySurchargePercent',
         'travel_cost_rate' => 'travelCostRate',
+        'travel_cost_mode' => 'travelCostMode',
+        'travel_cost_per_km' => 'travelCostPerKm',
         'minimum_hours' => 'minimumHours',
         'break_policy' => 'breakPolicy',
         'billing_interval' => 'billingInterval',
@@ -291,6 +299,8 @@ class FacilityResponse implements ModelInterface, ArrayAccess, \JsonSerializable
         'sunday_surcharge_percent' => 'setSundaySurchargePercent',
         'holiday_surcharge_percent' => 'setHolidaySurchargePercent',
         'travel_cost_rate' => 'setTravelCostRate',
+        'travel_cost_mode' => 'setTravelCostMode',
+        'travel_cost_per_km' => 'setTravelCostPerKm',
         'minimum_hours' => 'setMinimumHours',
         'break_policy' => 'setBreakPolicy',
         'billing_interval' => 'setBillingInterval',
@@ -324,6 +334,8 @@ class FacilityResponse implements ModelInterface, ArrayAccess, \JsonSerializable
         'sunday_surcharge_percent' => 'getSundaySurchargePercent',
         'holiday_surcharge_percent' => 'getHolidaySurchargePercent',
         'travel_cost_rate' => 'getTravelCostRate',
+        'travel_cost_mode' => 'getTravelCostMode',
+        'travel_cost_per_km' => 'getTravelCostPerKm',
         'minimum_hours' => 'getMinimumHours',
         'break_policy' => 'getBreakPolicy',
         'billing_interval' => 'getBillingInterval',
@@ -408,6 +420,8 @@ class FacilityResponse implements ModelInterface, ArrayAccess, \JsonSerializable
         $this->setIfExists('sunday_surcharge_percent', $data ?? [], null);
         $this->setIfExists('holiday_surcharge_percent', $data ?? [], null);
         $this->setIfExists('travel_cost_rate', $data ?? [], null);
+        $this->setIfExists('travel_cost_mode', $data ?? [], null);
+        $this->setIfExists('travel_cost_per_km', $data ?? [], null);
         $this->setIfExists('minimum_hours', $data ?? [], null);
         $this->setIfExists('break_policy', $data ?? [], null);
         $this->setIfExists('billing_interval', $data ?? [], null);
@@ -1130,6 +1144,74 @@ class FacilityResponse implements ModelInterface, ArrayAccess, \JsonSerializable
         return $this;
     }
 
+    /**
+     * Gets travel_cost_mode
+     *
+     * @return string|null
+     */
+    public function getTravelCostMode()
+    {
+        return $this->container['travel_cost_mode'];
+    }
+
+    /**
+     * Sets travel_cost_mode
+     *
+     * @param string|null $travel_cost_mode travel_cost_mode
+     *
+     * @return self
+     */
+    public function setTravelCostMode($travel_cost_mode)
+    {
+        if (is_null($travel_cost_mode)) {
+            array_push($this->openAPINullablesSetToNull, 'travel_cost_mode');
+        } else {
+            $nullablesSetToNull = $this->getOpenAPINullablesSetToNull();
+            $index = array_search('travel_cost_mode', $nullablesSetToNull);
+            if ($index !== FALSE) {
+                unset($nullablesSetToNull[$index]);
+                $this->setOpenAPINullablesSetToNull($nullablesSetToNull);
+            }
+        }
+        $this->container['travel_cost_mode'] = $travel_cost_mode;
+
+        return $this;
+    }
+
+    /**
+     * Gets travel_cost_per_km
+     *
+     * @return float|null
+     */
+    public function getTravelCostPerKm()
+    {
+        return $this->container['travel_cost_per_km'];
+    }
+
+    /**
+     * Sets travel_cost_per_km
+     *
+     * @param float|null $travel_cost_per_km travel_cost_per_km
+     *
+     * @return self
+     */
+    public function setTravelCostPerKm($travel_cost_per_km)
+    {
+        if (is_null($travel_cost_per_km)) {
+            array_push($this->openAPINullablesSetToNull, 'travel_cost_per_km');
+        } else {
+            $nullablesSetToNull = $this->getOpenAPINullablesSetToNull();
+            $index = array_search('travel_cost_per_km', $nullablesSetToNull);
+            if ($index !== FALSE) {
+                unset($nullablesSetToNull[$index]);
+                $this->setOpenAPINullablesSetToNull($nullablesSetToNull);
+            }
+        }
+        $this->container['travel_cost_per_km'] = $travel_cost_per_km;
+
+        return $this;
+    }
+
     /**
      * Gets minimum_hours
      *